Chapter 198: Crystal Stone Level

Wang Dong proudly explained, "You guys probably don't know about this! Crystal stones aren't found inside zombie skulls. I once had the fortune to pick up a red crystal stone, like a glassy crystal. Blue is the lowest quality, followed by green, yellow, and finally red! With the red crystal stone, I managed to exchange it for quite a few things!"

Fu Shinan inquired, "Where can you find these crystal stones, and what do they use them for?"